Railway-track structure.



PATENTED MAY 2.6, y1903.

J. HART.

RAILWAY TRACK STRUCTURE.

)ICIV MODEL.

APPLICATION FILED NOV. 13. 1902,

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ivo. 729,067. Patented May as, 1903.

UNrrE STATES PATENT OEEICE.

JAMES HART, OF JOHNSTOVVN, PENNSYLVANIA, ASSIGNOR TO THE LORAIN STEEL COMPANY, A CORPORATION OF PENNSYLVANIA.

RAILWAY-TRACK STRUCTU RE.

SPECIFICATION forming part of Letters Patent N o. 729,067, dated May 26, 1903.

Application tiled November 13, 1902. Serial No. 131.089. (No model.)

To all whom, it may concern: pointed out in the appended claims, refer- Be it known that I, JAMES HART, of Johnsence being had to the accompanyingdrawings,

town, in the county of Oambria and State of in which- Pennsylvania, have invented a new and use- Figure l is a plan view of a frog or curve- 5 ful Improvement in Railway-Track Struccross embodying the invention; Fig. 2, aseo 55 tures, of which the following is a full, clear, tion on the line 2 2 of Fig. l; Fig. 3, a bottom and exact description, reference being had to plan view of the plate removed; Fig. et, a plan the accompanying drawings, which form a view of the body portion of the structure with part of this specification. the plate removed, and Fig. 5 a transverse 1o My invention has' relation to certain new vertical section showingamodification. Figs. 6o and useful improvements in means for secur- 2, 3, 4, and 5 are drawn to a larger scale than ing in place the renewable portions or plates Fig. 1. of railway-track structures. These renew- The letter A designates the body portion of able portions or plates, which are of a very the structure, having a seat a for the renew- I5 hard and durable quality of steel, are now able track-surfaced portion or plate B and 65 very largely employed, especially in streetformed with the cavity ot', adapted to seat a railway work. They are track-surfaced in downward extension b of said plate. The alinement with the abutting portions of the latter is made somewhat smaller than the track and usuallyvconstitute all those porcavity in order to leave a surrounding space zo tions of the structure which receive the greatfor the retaining material C. Oored through 7o est wear-that is to say, the intersecting or the marginal portion of the plate are openmeeting portions of the track-surfaces. The ings d, terminating at the surface of the plate severe usage which these structures receive in enlarged portions d', and cored through the in the streets, not only from the modern seatctare registering openings e. The open- 25 heavy car traffic, but also from miscellaneous ings e are smallest at their upper ends, from 75 street traffic, makes it necessary that the rewhich they are enlarged downwardly. newable portions or plates shall be very se- In assembling the structure the plate B is curely fastened in place in order that they placedinits seatandis properly leveled theremay not become loose in service. The fasin by means of thin blocks or shims g. The

3o tenings, however, are required to be of such retaining material in liquid form is then 8o character that they can be readily removed poured into one or more of the openings cl to permit the plate to be unseated and reand fills up the space underneath the plate moved and replaced when necessary. It is and around the extension t and also the openalso desirable to so arrange the fastening that ings d and e, as shown in Fig. 2. Before this 35 this can be done without disturbing the admetal is poured the lower portions of the 85 jacent pavement. openings cV should be filled up with plugs of My invention is designed to provide a faswood, clay, or other suitable material, and tening which will possess the above-stated suitable dams or clamps should be placed requirements; audit consists in the employalong the joints at the side to prevent the .to ment of a retaining material engaging pockmetal from running out. Vhen cooled, said 9o ets or seats in the plate and in the body of metal, it'will be seen, not only forms a bed the structure, such pockets or seats being so for the plate, but by reason of the enlarged arranged that by cutting away small portions `portions of the openings e and d, which form of the retaining material accessible from the pockets filled with the metal, the plate is se- 45 surface of. the plate the remaining portions curely fastened to its seat. In order to hold 95 thereof may be readily driven out, leaving the retaining material underneath the marthe plate free to be removed. ginalportion of the plate from any tendency My invention also consists in the novel to hammer or pound out in service, I preferconstruction and combination of parts, all ably form longitudinal grooves hin the un- 5o substantially as hereinafter described, and der side of the plate or in the surface of the roo seat d, or in both, as shown. By means of these grooves ribs or beads of the retaining material are formed, which not only tend to prevent such material from cracking and working out, but they also give the plate a further bearing. When it is designed to remove the plate, the retaining' material in the pockets or enlargements d may be out, chipped, or bored out. A punch or drift can then be applied to the cores or plugs remaining in the openings D, and said plugs or cores, together with the material in the pockets e, can be driven through to the bottom ot' the structure, and thus free the plate.

In some structures it may be preferable to provide the plate-seat with side walls a', as shown in Fig. 5. In this igure I have also shown pockets d2 and e', which are of somewhat dierent shape from the pockets CZ and e. Any other suitable form of pocket may, however, be used. In this construction the extension b'on the plate is omitted, as lthe walls a provide the required lateral bearing.

For the retaining material I prefer to employ spelter on account of its hardness and toughness as well as its comparative cheapness; but any suitable material may be employed.

While I have illustrated my invention in connection with a frog or curve-cross, it is equally adapted to other crossings and to mates, switch pieces, and all other track structures in which a renewable portion or plate is seated and secured in the body of the structure. I also do not wish to limit myself to the precise arrangement of the fastenings herein shown and described, as they may be variously formed and located-without departing from the spirit and scope of my invention. I do not, however, claim, broadly, a plate-fastening composed of a body of retaining material engaging pockets or seats in the plate and in the body of the structure and having an integral connection portion which can be removed to release the fastening, as I believe that to be the invention of George H. Parmelee, of Johnstown, Pennsylvania, as described and claimed in his pending applications Serial Nos. 131,032 and 131,033 and which I am familiar with.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is-

1. In a-railway-track structure, the combination with the body portion of the structure havinga seat for a renewable portion or plate, said seat having cavities or pockets therein and openings leading from said cavities or pockets to the bottom of the structure, of a renewable portion or plate having pockets or cavities in its upper surface and openings of reduced diameter leading therefrom to the pockets or cavities in said seat, and retaining material bedding the plate and filling said pockets or cavities, and also the openings which connect the same.

2. In a railway-track struct-ure, the combination ofthe body portion and the plate seated therein, said body portion and plate having pockets or cavities therein for retaining material, said plate also having openings therethrough of reduced diameter which connect its pockets or cavities with those of said body portion, and said body portion having openings leading from its pockets or cavities to the bottom of the structure, and retaining material illing said pockets or cavities and also the openings through the plate, substantially as specified.

3. In a railway-track structure, the combination with the body portion having a plateseat formed with pockets or cavities which are smaller at their upper than at their lower ends, and openings leading from their lowerends, to the bottom of the structure, of a plate having pockets in its upper surface which are larger at the top than at the bottom, and openings of reduced diameter leading from the bottom of said pockets to the openings in the plate-seat, together with retaining material filling the said pockets and the openings through the plate.

4. In a railway-track structure, having a renewable portion or plate, a fastening for said portion or plate consisting of a column or core of retaining material cast in place and extending vertically through the plate into the body of the structure and enlarged at its end portions.

5. In a railway-track structure, the combination with the body portion of the structure having a plate seat formed without side walls, a plate secured to said seat, and. retaining material bedding the said plate, and having ribs or beads lying between the plate and its seat, substantially as described.

6. In a railway-track structure, the combination with the body portion of the structure having a plate -seat formed without side walls, a plate secured to said seat, grooves in the seating-faces of the plate and body portion, and retaining material bedding the plate and filling the said grooves.

7. In a railway-track structure, the combination with the body portion having the plateseat formed with a central cavity or recess, and the plate having an extension fitting said cavity or recess, of the retaining material bedding said plate and engaging grooves formed in one or both of the seating-surfaces of the seat and plate near the longitudinal edges thereof, substantially as described.

In testimony whereof I have affixed my signature in presence of two witnesses.

JAMES HART.

Witnesses:

LoRETTo OOONNELL, H. W. SMITH.

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